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A223557 as a simple table

n a(n)
1 6
2 27
3 171
4 1089
5 6939
6 44217
7 281763
8 1795473
9 11441259
10 72906921
11 464583411
12 2960456193
13 18864859707
14 120212193177
15 766025913411
16 4881332621169
17 31105224694539
18 198211242377097
19 1263057797861523
20 8048559615522273

[6,27,171,1089,6939,44217,281763,1795473,11441259,
 72906921,464583411,2960456193,18864859707,
 120212193177,766025913411,4881332621169,
 31105224694539,198211242377097,1263057797861523,
 8048559615522273]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)